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NEET
Exam
NEET
Subject
Physics
Chapter
Thermodynamics

NEET · Physics · Thermodynamics

The P - V diagram of a diatomic ideal gas system going under cyclic...

The P−VP - V diagram of a diatomic ideal gas system going under cyclic process as shown in figure. The work done during an adiabatic process CDCD is (use γ=1.4)\gamma = 1 . 4 ) :

The P - V diagram of a diatomic ideal gas system going under cyclic process as shown in figure. The work done during an

Options

  1. A–500J– 500J
  2. B–400J– 400J
  3. C400J400J
  4. D200J200J

Correct answer

A. –500J– 500J

Step-by-step solution

Adiabatic process is from CC to DD
WD=P2V2−P1V11−γWD = \dfrac{{P}_{2}{V}_{2} - {P}_{1}{V}_{1}}{1 - \gamma}
=PDVD−PCVC1−γ= \dfrac{{P}_{D}{V}_{D} - {P}_{C}{V}_{C}}{1 - \gamma}
=200(3)−(100)(4)1−1.4= \dfrac{200 ( 3 ) - ( 100 ) ( 4 )}{1 - 1 . 4}
=−500J= - 500J
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